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Preparation characteristics of coal occurring in Cambria County, Pa.

Preparation characteristics of coal occurring in Armstrong County, Pa.

Preparation characteristics of coal occurring in Indiana County, Pa.

Published Year

• 1950-1959 (3)

Subject

• Coal preparation--Pennsylvania--Armstrong County (1)
• Coal preparation--Pennsylvania--Indiana County (1)
• Coal--Pennsylvania--Armstrong County--Sampling (1)
• Coal--Pennsylvania--Cambria County (1)
• Coal--Pennsylvania--Indiana County--Sampling (1)

Author

• Steele, Fern. (3) *
• Bailey, A. L. (2)
• Crentz, William L. (2) *
• Crentz, W. L. (1)

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